NYC 9/11 Public Portal Document
TESTING (ELPAT) PROGRAM
ENVIRONMENTAL LEAD PROFICIENCY ANALYTICAL
INDIVIDUAL LABORATORY REPORT FOR ROUND 023
LAB ID=07054 JUNE 24, 1998
ATC ASSOCIATES INC. NY, NEW YORK, NY 10010
REPORTED REFERENCE ACCEPTABLE RANGE X LAB d 2
;AMPLE
VALUES ' LOWER UP°ER PERFORMANCE SCORE
SAMPLE TYPE NO. RESULTS
0. ,3/)6 O.U26 0.0467
:'si t Chips ('_) 1 0.0375
1.4203 2.1966 a 0.18
2 1 .8316 1.8085
0.42S 0.3469 0.5042 'k -0.30
3 0.4177
1.0184 1.0131 0.8111 1.2152 0.Od
1421 .6 1187.5 1655.6 A -0.37
Soi l (mg/kg) 1
1392.7
2 61 .4 57.1 36.9 77.9 A 0.59
3 213 ;.1p 9 168 269.7 A -0.35
459.4 46P.1 388.2 532.2 A -0.03
112.3 125. 1348 99.4 158.9 A 1 .70
Oust wipes (ug) 1
[71.547 210.4 332.7 A - 1 .08
2 249.5
59.0183 38.4 79.7 A -0.56
3 55.2
• 561.9713 438.3 685.7 A 0.17
4 5 '
reference laboratories
• Reference value is the mean of the
reference value + 3 standard deviations
x Uooer limit:
standard deviations
Lower l imit: reference value - 3
Results not reported
a A: Analysis acceptable; - :
lower limit, not acceptable
H: Results > upper limit, L: Results <
(repored result -reference value)/standard deviation
& Z Score =
results is based on z -scores.
more: the acceptablity of reported
This is why a reported result may appear acceptable according to
outl ier.
performance l imits, but De identified as an
LABORATORY YEAR -70-DATE PERFORMANCE REPORT
LAB ID=07054
ROUND ' ACCUMULATED PERFORMANCE PROFICIENCY
ROUND
PERFORMANCE 4 ROUNDS(n) 2 ROUNDS('_) RATING I
SAMPLE TYPE NO.
020 4/4
Paint Chips (7.)
021 4/4
022 4/4
4/4 16/16 100 8/8 100 P
023
Soil (mg/kg) 020 4/4
021 4/4
022 4/4
023 4/4 16/16 100 8/8 100 P
020 4/4
Dust Wipes (ug)
021 4/4
022 4/4
4/4 16116 100 8/8 100 P
023
of total samples analyzed.
The denominators represent the number
of acceptable results.
The numerators represent the number Not Rated
Z P : Proficient NP: Nonproficient
are based on accumulated results over four rounds
Performance ratings
paint chips, soi l , or dust
(one year). A lab's performance in ground
-fourths (75%) or more of the
wipes is rated proficient (P), if: 1) three
or 2; for the last
accumulated results over four rounds are acceptable
samp(es are analyzed and the results are 100 : acceptable.
two rounds, all
NYC-WTC 000120984
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